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AC: A Compression Tool for Amino Acid Sequences.

07:00 EST 5th February 2019 | BioPortfolio

Summary of "AC: A Compression Tool for Amino Acid Sequences."

Advancement of protein sequencing technologies has led to the production of a huge volume of data that needs to be stored and transmitted. This challenge can be tackled by compression. In this paper, we propose AC, a state-of-the-art method for lossless compression of amino acid sequences. The proposed method works based on the cooperation between finite-context models and substitutional tolerant Markov models. Compared to several general-purpose and specific-purpose protein compressors, AC provides the best bit-rates. This method can also compress the sequences nine times faster than its competitor, paq8l. In addition, employing AC, we analyze the compressibility of a large number of sequences from different domains. The results show that viruses are the most difficult sequences to be compressed. Archaea and bacteria are the second most difficult ones, and eukaryota are the easiest sequences to be compressed.

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This article was published in the following journal.

Name: Interdisciplinary sciences, computational life sciences
ISSN: 1867-1462
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Medical and Biotech [MESH] Definitions

A theoretical representative nucleotide or amino acid sequence in which each nucleotide or amino acid is the one which occurs most frequently at that site in the different sequences which occur in nature. The phrase also refers to an actual sequence which approximates the theoretical consensus. A known CONSERVED SEQUENCE set is represented by a consensus sequence. Commonly observed supersecondary protein structures (AMINO ACID MOTIFS) are often formed by conserved sequences.

The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.

A broad-spectrum excitatory amino acid antagonist used as a research tool.

A sequence of amino acids in a polypeptide or of nucleotides in DNA or RNA that is similar across multiple species. A known set of conserved sequences is represented by a CONSENSUS SEQUENCE. AMINO ACID MOTIFS are often composed of conserved sequences.

Specific amino acid sequences present in the primary amino acid sequence of proteins which mediate their export from the CELL NUCLEUS. They are rich in hydrophobic residues, such as LEUCINE and ISOLEUCINE.

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